DE2145729C3 - Projektionsvorrichtung - Google Patents

Projektionsvorrichtung

Info

Publication number
DE2145729C3
DE2145729C3 DE2145729A DE2145729A DE2145729C3 DE 2145729 C3 DE2145729 C3 DE 2145729C3 DE 2145729 A DE2145729 A DE 2145729A DE 2145729 A DE2145729 A DE 2145729A DE 2145729 C3 DE2145729 C3 DE 2145729C3
Authority
DE
Germany
Prior art keywords
lens
focusing
projection
radiation
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE2145729A
Other languages
German (de)
English (en)
Other versions
DE2145729A1 (de
DE2145729B2 (de
Inventor
N Shim
O Szymber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAF Corp
Original Assignee
GAF Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GAF Corp filed Critical GAF Corp
Publication of DE2145729A1 publication Critical patent/DE2145729A1/de
Publication of DE2145729B2 publication Critical patent/DE2145729B2/de
Application granted granted Critical
Publication of DE2145729C3 publication Critical patent/DE2145729C3/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Projection Apparatus (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
DE2145729A 1970-09-14 1971-09-13 Projektionsvorrichtung Expired DE2145729C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7207670A 1970-09-14 1970-09-14

Publications (3)

Publication Number Publication Date
DE2145729A1 DE2145729A1 (de) 1972-03-16
DE2145729B2 DE2145729B2 (de) 1974-02-14
DE2145729C3 true DE2145729C3 (de) 1974-09-19

Family

ID=22105406

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2145729A Expired DE2145729C3 (de) 1970-09-14 1971-09-13 Projektionsvorrichtung

Country Status (15)

Country Link
US (1) US3672757A (fr)
JP (1) JPS5142940B1 (fr)
AT (1) AT331534B (fr)
BE (1) BE772530A (fr)
BR (1) BR7105990D0 (fr)
CA (1) CA962099A (fr)
CH (1) CH530020A (fr)
DE (1) DE2145729C3 (fr)
ES (1) ES395045A1 (fr)
FR (1) FR2107602A5 (fr)
GB (1) GB1357581A (fr)
IL (1) IL37636A (fr)
NL (1) NL7112544A (fr)
SE (1) SE375386B (fr)
ZA (1) ZA716108B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135794A (en) * 1975-05-12 1979-01-23 Addressograph-Multigraph Corporation Photocomposition machine
US4215922A (en) * 1978-11-01 1980-08-05 Am International, Inc. Method for projecting characters at a selected point size in a photocomposition machine
US4415244A (en) * 1982-03-22 1983-11-15 Telex Communications, Inc. Automatic focusing system
DE3310601C2 (de) * 1982-03-24 1994-02-10 Canon Kk Entfernungsmeßvorrichtung
EP0605053B1 (fr) * 1992-12-28 1997-11-19 Koninklijke Philips Electronics N.V. Système de projection d'image ayant une focalisation automatique
US5400093A (en) * 1992-12-28 1995-03-21 U.S. Philips Corporation Image projection system with autofocusing
US5434632A (en) * 1993-03-22 1995-07-18 U.S. Philips Corporation Image projection apparatus with a autofocusing system
US5609404A (en) * 1996-04-16 1997-03-11 Eastman Kodak Company Apparatus and related method for correcting slide warpage in a slide projector
US6778277B2 (en) * 2001-05-24 2004-08-17 Eastman Kodak Company Apparatus and method to measure film motion in a film gate

Also Published As

Publication number Publication date
AU3340671A (en) 1973-03-22
IL37636A (en) 1974-07-31
GB1357581A (en) 1974-06-26
ATA768971A (de) 1975-11-15
FR2107602A5 (fr) 1972-05-05
JPS5142940B1 (fr) 1976-11-18
CA962099A (en) 1975-02-04
DE2145729A1 (de) 1972-03-16
SE375386B (fr) 1975-04-14
NL7112544A (fr) 1972-03-16
CH530020A (de) 1972-10-31
BE772530A (fr) 1972-01-17
BR7105990D0 (pt) 1973-04-12
US3672757A (en) 1972-06-27
ES395045A1 (es) 1974-11-16
DE2145729B2 (de) 1974-02-14
AT331534B (de) 1976-08-25
ZA716108B (en) 1972-05-31
IL37636A0 (en) 1971-11-29

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee